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Service use deviceRelated Patent Categories: Data Processing: Presentation Processing Of Document, Operator Interface Processing, And Screen Saver Display Processing, Operator Interface (e.g., Graphical User Interface)Service use device description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070044020, Service use device. Brief Patent Description - Full Patent Description - Patent Application Claims
TECHNICAL FIELD [0001] The present invention relates to a service utilizing apparatus suitably applied to a service providing system which provides a service of downloading content data such as music to a user's terminal. BACKGROUND ART [0002] Conventionally, in a service providing system, there is available a service in which a terminal, which serves as a service utilizing apparatus, can acquire content such as music from a management server for managing the system in response to a user's operation instruction. [0003] In receiving such a service in this service providing system, settlement processing or the like is required for content acquisition and, therefore, user ID for identification and password corresponding to the user ID (hereinafter, which are collectively referred to as user authentication information) is transmitted from the terminal to the management server. [0004] The terminal needs to transmit the user authentication information every time the user utilizes a service. This is troublesome for the user. In order to cut out the need of inputting the user authentication information each time, the user authentication information is previously stored in the terminal and is read out according to the need. [0005] Further, there is available a terminal that stores, as bookmarks, web pages that the user frequently visits. Thus, the terminal stores user utilization information such as the bookmarks that differ from user to user and thereby increases usability (refer to, for example, Patent Document 1). [0006] Patent Document 1 Jpn. Pat. Appln. Laid-Open Publication No. 2002-216099 (Page 14, FIG. 1). [0007] However, such a terminal may be used by another user different from the original user in some cases due to handover. [0008] In such a case, deletion of the user authentication information or user utilization information (which are collectively referred to as individual information) stored in the terminal through a user's operation prevents the individual information from being disclosed to another user. [0009] However, in the case where the user fails to delete the individual information, the case where the terminal is stolen, or the case where the terminal is used by another user without permission, there is a possibility that the individual information is disclosed to and misused by another user. DISCLOSURE OF INVENTION [0010] The present invention has been made in view of the above points, and an object thereof is to propose a service utilizing apparatus, a service utilizing method, and a service utilizing program that can prevent information leakage by detecting a change of a user of the apparatus and deleting user information. [0011] To solve the above problem, a service utilizing apparatus according to the present invention comprises: a transmission means for transmitting, to a service providing apparatus, user information together with request information that requests user registration; a reception means for receiving registration completion information indicating completion of the user registration, the registration completion information being transmitted from the service providing apparatus after the user registration using the user information has been completed; a storage means for storing the user information according to the received registration completion information in a storage medium; a user change detection means for detecting a change of a user who receives a service; and a delete means for deleting the user information stored in the storage medium when the user change detection means detects the change of a user. [0012] With the service utilizing apparatus, it is possible to detect a change of a user who receives a service as well as to automatically delete the user information from the storage medium and service providing apparatus when the change of a user is detected. [0013] A service utilizing method according to the present invention includes: transmitting, to a service providing apparatus, user information together with request information that requests user registration; receiving registration completion information indicating completion of the user registration, the registration completion information being transmitted from the service providing apparatus after the user registration using the user information has been completed; storing the user information according to the received registration completion information in a storage medium; and deleting the user information stored in the storage medium when a change of a user that receives the service is detected. [0014] With the service utilizing method, it is possible to detect a change of a user who receives a service as well as to automatically delete the user information from the storage medium and service providing apparatus when the change of a user is detected. [0015] A service utilizing program according to the present invention allows an information processor to execute to transmit, to a service providing apparatus, user information together with request information that requests user registration; to receive registration completion information indicating completion of the user registration, the registration completion information being transmitted from the service providing apparatus after the user registration using the user information has been completed; to store the user information according to the received registration completion information in a storage medium; and to delete the user information stored in the storage medium when a change of a user that receives the service is detected. [0016] With the service utilizing program, it is possible to detect a change of a user who receives a service as well as to automatically delete the user information from the storage medium and service providing apparatus when the change of a user is detected. [0017] According to the present invention, it is possible to detect a change of a user who receives a service as well as to automatically delete the user information from the storage medium and service providing apparatus when the change of a user is detected. Thus, it is possible to realize a service utilizing apparatus, a service utilizing method, and a service utilizing program capable of preventing leakage of user information even when the service utilizing apparatus is used by another user. BRIEF DESCRIPTION OF DRAWINGS [0018] FIG. 1 is a schematic diagram showing the entire configuration of a service providing system according to an embodiment of the present invention; [0019] FIG. 2 is a schematic block diagram showing a configuration of a service providing server; [0020] FIG. 3 is a schematic block diagram showing a circuit configuration of a terminal; Continue reading about Service use device... Full patent description for Service use device Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Service use device patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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